Re: [PATCH 1/1] drm/msm/dpu: Fix error return code in dpu_mdss_init()

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Quoting Zhen Lei (2021-05-07 19:42:54)
> Fix to return a negative error code from the error handling case instead
> of 0, as done elsewhere in this function.
>
> Fixes: 070e64dc1bbc ("drm/msm/dpu: Convert to a chained irq chip")
> Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
> Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx>
> ---
>  drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
> index 06b56fec04e0..1b6c9fb500a1 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
> @@ -253,8 +253,10 @@ int dpu_mdss_init(struct drm_device *dev)
>                 goto irq_domain_error;
>
>         irq = platform_get_irq(pdev, 0);
> -       if (irq < 0)
> +       if (irq < 0) {
> +               ret = irq;
>                 goto irq_error;
> +       }

It would be even better if ret wasn't assigned to 0 at the start of this
function.

>
>         irq_set_chained_handler_and_data(irq, dpu_mdss_irq,
>                                          dpu_mdss);



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